Artificial fuel.



PAULINE GRAYSON, JERSEY CITY, NEW JERSEY.

ARTIFICIAL FUEL.

No Drawing.

To all whom it may concern:

Be it known that I, PAULINE GnAYsoN, a citizen of the United States, residing at Jersey City, New Jersey, have invented certain new and useful Improvements in Artificial lijuel, of which the following is a specification.

My invention relates to the manufacture of artificial fuel of that class in which a natural carbonaceous base is mixed with a binding material, and with an inflammable material for promoting combustion.

My principal purpose is to utilize a kind of natural carbonaceous material hitherto, so far as I am aware, not usable in its natural condition for fuel. This material is known as Rhode Island coal. It is of an anthracite order of coal, but is mixed with graphite and other material to such an extent as not to be combustible as a fuel in ordinary use.

y with this or other coals, of a composition of the character and substantially the proportions hereinafter indicated, whereby I correct the obdurate quality of the coal and render it available as a fuel. But the composition of matter which I mix with this coal,f\and which is necessary to render it combustible as a fuel, maybe used advantageously also with other coals, or carbonaceous matters, with advantage.

In order to explain my invention so that those skilled in the art may make or use it, I will explain it in connection with the material, Rhode Island coal, as a basis of the composition. This material I first comminute finely in any convenient way. To fifty (50) pounds of this (taken as a convenient unit), I add, as a binding material, two (2) pounds of a cement (preferably Portland), or an equivalent thereof in lime. I also add seven (7) pounds of tar (preferably pyroligneous), and two-and-one-half (2%) ounces of oil (preferably mineral), though the oil may be omitted. I also prefer to use twoand-one-half (2%) ounces of plaster of paris in a dry, pulverized state, (though this may be omitted), and sixteen (16) ounces of common salt (chlorid of sodium). Instead of chlorid of sodium I may use, with good effect, chlorid of calcium. The final ingredient consists of resin which, in the above specified composition, is in the proportion of eight (8) ounces. In some cases the resln Specification of Letters Patent. Application filed March 8, 1909. Serial No. 482,069.

invention consists in the admixture Patented June I4, taro.

' may be considerably reduced or entirely omitted. I state these proportions exactly, but they may be varied more or less Without departing from the spirit of my invention, and without material defect, the variation depending upon special variations in the base and the fineness of the coal dust.

If the coal which forms the base is very dry, the mixture requires the addition of water of about two (2) pints, for example, in the proportions above specified. But the peculiar kind of coal above mentioned ordinarily contains a large amount of moisture, and needs no further addition of water unless it be dried after and practicable order of procedure in the formation of this mixture may be as follows: a carbonaceous base is first pulverized, then mixed with the cement or lime, tar, oil and resin, salt and plaster, and these ingredients are preferably mixed with a squeezing motion so as to be thoroughly incorporated and produce the desired chemical reactions.

I am aware that it has been proposed to render the Rhode Island coal, or other graphitic coal, conbustible by coating the surfaces of the lumps or fragments with other substances or mixtures, and I distinguish my invention therefrom by the factthat I use this coal in a pulverized condition,

and mix or incorporate therewith the cornpositions or materials hereinbefore specified.

When the composition has been made, I form it into briquet-s of any desired size or shape, according to the particular use or the particular grate or furnace in which it is to be burned.

I claim as my invention 1. An artificial fuel consisting of pulverized Rhode Island or like graphitic coal, mixed in a pulverized condition with a binding material, and an igniting or readily combustible material, in substantially the proportions specified.

2. An artificial fuel consisting of a pulverized carbonaceous base formed of, Rhode Island or like graphitic coal mixed with a binding material with tar, and a salt, in sub stantially the proportions specified.

3. An artificial fuel consisting of a pulverized carbonaceous base formed of'Rhode Island or like graphitic coal mixed with a binding materia tar, a salt and resin in substantially the proportions speclfied.

4:. An artificial fuel conslsting of a pulgrinding. A convenient verized carbonaceous base formed of Rhode resin in substantially the proportions speci- Island or like gra hitic coal, mixed with a fied. 10 binding material 0 cement or lime, and with In testimon whereof, I aflix my signature tar, oil, a salt, and resin in substantially the in presenceo two witnesses.

5 proportions hereinbefore specified. PAULIN E GRAYSON.

5. An artificial fuel consisting of pulver- Witnesses: ized Rhode Island or like graphltic coal, ce- L. H. THOMAS, ment, tar, oil, plaster of pans, a salt, and P. J. SMITH. 

